function getSublingName(node){
	if(node.previousSibling){
		var name = '',
				count = 1,
				nodeName = node.nodeName,
				sibling = node.previousSibling;
		while(sibling){
			if(sibling.nodeType == 1 && sibling.nodeType === node.nodeType && sibling.nodeName){
				if(nodeName == sibling.nodeName){
					name += ++count;
				}else{
					count = 1;
					name += '|' + sibling.nodeName.toUpperCase();
				}
			}
			sibling = sibling.previousSibling;
		}
		return name;
	}else{
		return '';
	}
}

var Interpreter = (function(){
	// function getSublingName(node){
	// 	//	
	// 	console.log(node);
		
	// }
	return function(node, wrap){
		var path = [],
				wrap = wrap || document;
				if(node === wrap){
					if(wrap.nodeType == 1){
						path.push(wrap.nodeName.toUpperCase());
					}
					return path;
				}
				if(node.parentNode !== wrap){
					path = arguments.callee(node.parentNode, wrap);
				}else{
					if(wrap.nodeType == 1){
						path.push(wrap.nodeName.toUpperCase());
					}
				}
				var sublingsNames = getSublingName(node);
				if(node.nodeType == 1){
					path.push(node.nodeName.toUpperCase() + sublingsNames);
				}
				return path;
		}
})();

var path = Interpreter(document.getElementById('span7'));
console.log(path.join('>'));